摘要
本设计以单片机STC89C52为控制核心,利用数模转换器ADS1110以及继电器(为切换开关)对被测量信号进行采样,通过单片机处理完成对运算放大器LM741的UIO、IIO、AVC、KCMR等参数的测量,并通过系统显示接口,利用LED显示装置将测试的结果进行显示,同时本系统还能通过键盘进行人机交流。
The purpose of this design is to complete a integrate operation parameter test instrument with single chip STC89C52 as the core of this system,which can take important measurements of parameters of signals input through D/A converter.The results of the measurements then are displayed through LED.The system can realize person-machine communication through keyboard.
出处
《技术与教育》
2006年第1期29-30,共2页
Technique & Education
关键词
增益
失调
共模抑制比
闭环
gain
maladjustment
common mode rejection ratio
closed circuit
